Ballpoint pen



FIG. 1 is a perspective view of the ballpoint pen showing my new design;

FIG. 2 is a front elevation view thereof, the rear elevation view being a mirror image thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan thereof; and,

FIG. 7 is a sectional view thereof taken along line 7-7 in FIG. 2. 

The ornamental design for a ballpoint pen, as shown and described. 